Through The Intercept Brasil in June 2019, Greenwald published leaked conversations between senior officials involved in Operation Car Wash, a corruption case in Brazil. Greenwald subsequently started self-publishing on Substack.
In 2014, he cofounded The Intercept, of which he was an editor until he resigned in October 2020. His work contributed to The Guardian 's 2014 Pulitzer Prize win and he was among a group of three reporters who won the 2013 George Polk Award.
In June 2013, while at The Guardian, he began publishing a series of reports detailing previously unknown information about American and British global surveillance programs based on classified documents provided by Edward Snowden. Greenwald started contributing to Salon in 2007, and to The Guardian in 2012. He became a vocal critic of the Iraq War and has maintained a critical position of American foreign policy. Bush administration in the aftermath of the September 11 attacks. He began blogging on national security issues in October 2005, when he was becoming increasingly concerned with what he viewed as attacks on civil liberties by the George W. In 1996, Greenwald founded a law firm concentrating on First Amendment litigation. Glenn Edward Greenwald (born March 6, 1967) is an American journalist, author, and former lawyer.